EP2884564B1 - Batterie rechargeable présentant un boîtier d'isolation - Google Patents

Batterie rechargeable présentant un boîtier d'isolation Download PDF

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Publication number
EP2884564B1
EP2884564B1 EP14189551.6A EP14189551A EP2884564B1 EP 2884564 B1 EP2884564 B1 EP 2884564B1 EP 14189551 A EP14189551 A EP 14189551A EP 2884564 B1 EP2884564 B1 EP 2884564B1
Authority
EP
European Patent Office
Prior art keywords
connection plate
rechargeable battery
plate
receiving case
cap plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14189551.6A
Other languages
German (de)
English (en)
Other versions
EP2884564A1 (fr
Inventor
Jae-il Seong
Hideaki Yoshio
Ji-Won Yun
Kwang-Sik Seo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung SDI Co Ltd
Original Assignee
Samsung SDI Co Ltd
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Filing date
Publication date
Application filed by Samsung SDI Co Ltd filed Critical Samsung SDI Co Ltd
Publication of EP2884564A1 publication Critical patent/EP2884564A1/fr
Application granted granted Critical
Publication of EP2884564B1 publication Critical patent/EP2884564B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/579—Devices or arrangements for the interruption of current in response to shock
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • Some rechargeable batteries use a lithium-based oxide as a positive electrode active material and a carbon-based material as a negative electrode active material.
  • the rechargeable battery is classified into a liquid electrolyte battery and a polymer electrolyte battery according to the type of electrolyte, and a battery using the liquid electrolyte is called a lithium ion battery and a battery using the polymer electrolyte is called a lithium polymer battery.
  • US2006/051667 , EP2144312 , and WO2013/031056 relate to a terminal plate for a secondary battery.
  • a rechargeable battery comprising an electrode assembly, a receiving case for accommodating the electrode assembly, a cap plate arranged to close the receiving case, an insulating case provided between the cap plate and the electrode assembly, the insulating case having a base and a side wall, the side wall including cut-out portions and a connection plate arranged in the insulating case, wherein portions of the connection plate are arranged to contact the receiving case through the cut-out portions to cause a short-circuit as a result of relative movement between the receiving case and the connection plate, wherein the connection plate comprises laterally extending protrusions arranged to contact the receiving case as a result of relative movement between the cap plate and the connection plate, and/or wherein the connection plate comprises longitudinally extending protrusions arranged to contact the receiving case as a result of relative movement between the receiving case and the connection plate.
  • the rechargeable battery may further comprise an insulating plate between the cap plate and the connection plate.
  • the connection plate comprises a first portion to which an electrode tab is attached and a second portion through which the terminal penetrates, wherein the second portion is wider than the first portion.
  • connection plate comprises laterally extending protrusions arranged to contact the receiving case as a result of relative movement between the cap plate and the connection plate.
  • connection plate may include a first portion to which the first tab is attached and a second portion through which the terminal penetrates, and the second portion has a wider width than the first portion.
  • a short-circuit step protruding to the outside from a side end of the first portion may be formed in a portion where the first portion and the second portion are connected, and the avoiding portion may be provided between the second portion and the side surface of the receiving case.
  • a cut-out portion extended in a length direction of the short-circuit protrusion may be formed in a portion where the short-circuit protrusions and the second portion are connected, and a groove may be formed between the short-circuit protrusions, and the groove is concave toward an inner side from the front end of the second portion.
  • one of the two short-circuit protrusions may contact a side surface of the receiving case and the other short-circuit may contacts the alignment protrusion.
  • a rechargeable battery 101 includes an electrode assembly 10, a receiving case 20, and a cap plate 40.
  • the rechargeable battery is exemplarily described as a quadrangular shaped battery, but it is not limited to this.
  • the present invention may be applied to various rechargeable batteries such as a pouch battery, a lithium polymer battery, and the like.
  • the electrode assembly 10 includes a positive electrode (first electrode) 11, a negative electrode (second electrode) 12, and a separator 13 provided between the positive electrode 11 and the negative electrode 12.
  • the positive electrode 11 is formed in the shape of a long continuous band, and includes a positive electrode coated region where a positive electrode active material layer is formed and a positive electrode uncoated region where an active material is not coated.
  • the positive electrode uncoated region is located at one end in a length direction of the positive electrode 11.
  • a positive electrode tab (eg. first tab) 16 is fixed to the positive electrode 11, and a negative electrode tab (eg. second tab) 17 is fixed to the negative electrode 12.
  • the positive electrode tab 16 and the negative electrode tab 17 are disposed in parallel with a spiral turn shaft and protrude at cross-section portions where layers in the electrode assembly 10 are exposed.
  • the positive electrode tab 16 and the negative electrode tab 17 protrude to a direction where an opening is formed in the receiving case 20, and they are separated from each other and thus electrically insulated from each other.
  • the terminal 30 is inserted into the terminal hole 41, which is formed in the center of the cap plate 40.
  • the terminal 30 is provided in the cap plate 40, interposing an insulation gasket 35 therebetween, and the insulation gasket 35 electrically insulate the terminal 30 and the cap plate 40 while surrounding the terminal 30.
  • An electrolyte solution injection hole 42 which is a path for injection of the electrolyte solution to the receiving case 20 is provided in the cap plate 40, and a stopper 43 is provided in the electrolyte solution injection hole 42 to close the electrolyte solution injection hole 42.
  • the terminal 30 penetrates the cap plate 40 and a connection plate 60, and the connection plate 60 is provided between the electrode assembly 10 and the cap plate 40 in the receiving case 20.
  • the connection plate 60 is formed in the shape of a pin, and provided in parallel with the cap plate 40.
  • the terminal 30 is fixed to the cap plate 40 and the connection plate 60 by riveting while penetrating the cap plate 40 and the connection plate 60.
  • the negative electrode tab 17 is welded to the connection plate 60 and accordingly the terminal 30 can be electrically connected with the negative electrode through the connection plate 60 and the negative electrode tab 17.
  • a terminal hole 51 through which the terminal 30 penetrates is formed in the insulation plate 50, and two protrusions 52 and 53 are formed at one end in a length direction of the insulation plate 50.
  • the protrusions 52 and 53 are separated from each other along a width direction of the insulation plate 50.
  • An alignment protrusion 45 protruding downward toward the electrode assembly is formed in the cap plate 40, and the alignment protrusion 45 is provided between the protrusions 52 and 53. Accordingly, the insulation plate 50 can be located at an accurate location with ease.
  • connection plate 60 is formed in the shape of an elongate plate, and a terminal hole 63 through which the terminal 30 penetrates is formed towards one end of the connection plate 60. Accordingly, the connection plate 60 can rotate using the terminal 30 as a shaft.
  • the receiving case 20 is bent at a center portion thereof when a compressive force is applied to the receiving case 20. This is because the center portion of the receiving case 20 is relatively weak to a bending stress compared to other portionsFor example, a longitudinal compressive force is applied along a length direction of the cap plate 40.
  • the current may be dispersed through members having low contact resistance and then discharged. Accordingly, generation of excessive heat can be generated even through the short-circuit current flows.
  • a rechargeable battery according to the present exemplary embodiment is the same as the rechargeable battery of the first exemplary embodiment, excluding a structure of an insulation case 90 and a connection plate 80, and therefore a description of the same structure will be omitted.
  • the insulation case 90 includes a base 91 and a side wall protruding from a side end of the base 91.
  • the base 91 is formed in the shape of a plate, and a first tap hole 93 through which a positive electrode tab 16 penetrates and a second tab hole 94 through which a negative electrode tap 17 penetrates are formed in the base 91.
  • the side wall 92 is continued along a circumference of the base 91, and opened avoiding portions (also referred to as cut-out portions) 95 and 96 are formed in the side wall 92.
  • the avoiding portions 95 and 96 are formed as openings or slots penetrating the side wall 92, and extended in a length direction of the base 91.
  • the avoiding portions 95 and 96 are formed in the center in the length direction of the insulation case 90, and are arranged separated from each other along a width direction of the insulation case 90 such that they face each other.
  • the avoiding portions 95 and 96 are formed between the first portion 81 and a side surface 20b of the receiving case 20, and accordingly, a side surface of the first portion 81 directly contacts the receiving case 20.
  • the avoiding portions 95 and 96 may be formed between the short-circuit protrusions 87 and 88 and the receiving case 20 and between the short-circuit step 82a and the receiving case 20.
  • connection plate 120 is formed in the shape of a plate extended in one direction, and a terminal hole 123 through which a terminal 30 penetrates is formed in the connection plate 120. Accordingly, the connection plate 120 can rotate using the terminal 30 as a rotation axis.
  • a short-circuit step 124 protruding to the outside is formed at a side end of the connection plate 120.
  • the short-circuit step 124 protrudes to a width direction of the connection plate 120 from lateral side ends of the connection plate 120.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Claims (13)

  1. Batterie rechargeable comprenant :
    un ensemble d'électrodes (10) ;
    un boîtier de réception (20) pour loger l'ensemble d'électrodes ;
    une plaque formant capuchon (40) agencée pour fermer le boîtier de réception ;
    un boîtier isolant (70, 90) prévu entre la plaque formant capuchon et l'ensemble d'électrodes, le boîtier isolant ayant une base et une paroi latérale, la paroi latérale comprenant des parties découpées (75, 76 ; 95, 96) ; et
    une plaque de connexion (60, 80, 120) agencée dans le boîtier isolant ;
    dans laquelle des parties de la plaque de connexion sont agencées pour entrer en contact avec le boîtier de réception par le biais des parties découpées afin de provoquer un court-circuit en raison du mouvement relatif entre le boîtier de réception (20) et la plaque de connexion (60, 80, 120) ;
    dans laquelle la plaque de connexion comprend des saillies s'étendant latéralement, agencées pour être en contact avec le boîtier de réception en résultat du mouvement relatif entre la plaque formant capuchon (40) et la plaque de connexion (60, 80, 120) ; et/ou
    dans laquelle la plaque de connexion (60, 80, 120) comprend des saillies s'étendant longitudinalement, agencées pour être en contact avec le boîtier de réception en résultat du mouvement relatif entre le boîtier de réception (20) et la plaque de connexion (60, 80, 120).
  2. Batterie rechargeable selon la revendication 1, dans laquelle la plaque de connexion est mobile en rotation par rapport à la plaque formant capuchon.
  3. Batterie rechargeable selon la revendication 1 ou 2, comprenant en outre une première languette d'électrode raccordée à la plaque formant capuchon et une seconde languette d'électrode raccordée à la plaque de connexion.
  4. Batterie rechargeable selon l'une quelconque des revendications précédentes, dans laquelle les parties découpées (75, 76) comprennent des parties où la paroi latérale est plus basse qu'au niveau des autres parties de la paroi latérale.
  5. Batterie rechargeable selon l'une quelconque des revendications précédentes, dans laquelle les parties découpées comprennent des fentes allongées dans la paroi latérale.
  6. Batterie rechargeable selon l'une quelconque des revendications précédentes, dans laquelle les parties découpées comprennent des première et seconde parties découpées dans les côtés longs opposés du boîtier isolant, les première et seconde parties découpées étant agencées pour se faire face.
  7. Batterie rechargeable selon l'une quelconque des revendications précédentes, dans laquelle la plaque de connexion est fixée sur la plaque formant capuchon par une borne (30) qui pénètre dans la plaque formant capuchon et la plaque de connexion.
  8. Batterie rechargeable selon l'une quelconque des revendications précédentes, comprenant en outre une plaque isolante (50) entre la plaque formant capuchon et la plaque de connexion (60, 80, 120).
  9. Batterie rechargeable selon la revendication 7 ou la revendication 8 lorsqu'elle dépend de la revendication 7, dans laquelle la plaque de connexion (60, 80) comprend une première partie à laquelle une languette d'électrode est fixée et une seconde partie à travers laquelle la borne (30) pénètre, la seconde partie étant plus large que la première partie.
  10. Batterie rechargeable selon la revendication 9, dans laquelle une partie d'épaulement (62a, 82a) entre les première et seconde parties est agencée pour être en contact avec le boîtier de réception en résultat du mouvement relatif entre la plaque formant capuchon et la plaque de connexion.
  11. Batterie rechargeable selon l'une quelconque des revendications précédentes, comprenant en outre une saillie d'alignement (45) faisant saillie de la plaque formant capuchon, la saillie d'alignement étant agencée entre les saillies s'étendant longitudinalement.
  12. Batterie rechargeable selon la revendication 9, dans laquelle les parties découpées s'étendent dans une direction de longueur des saillies s'étendant longitudinalement où les saillies s'étendant longitudinalement et la seconde partie sont raccordées.
  13. Batterie rechargeable selon la revendication 11, dans laquelle, lorsque le boîtier de réception est plié en raison d'une force de compression, l'une des première et seconde saillies est en contact avec une surface latérale du boîtier de réception et l'autre est en contact avec la saillie d'alignement (45).
EP14189551.6A 2013-12-16 2014-10-20 Batterie rechargeable présentant un boîtier d'isolation Active EP2884564B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130156603A KR102119049B1 (ko) 2013-12-16 2013-12-16 절연 케이스를 갖는 이차 전지

Publications (2)

Publication Number Publication Date
EP2884564A1 EP2884564A1 (fr) 2015-06-17
EP2884564B1 true EP2884564B1 (fr) 2016-09-21

Family

ID=51753084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14189551.6A Active EP2884564B1 (fr) 2013-12-16 2014-10-20 Batterie rechargeable présentant un boîtier d'isolation

Country Status (5)

Country Link
US (1) US9570731B2 (fr)
EP (1) EP2884564B1 (fr)
JP (1) JP6505998B2 (fr)
KR (1) KR102119049B1 (fr)
CN (1) CN104716277B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102043458B1 (ko) * 2013-07-29 2019-11-11 삼성에스디아이 주식회사 이차 전지
JP2017059511A (ja) * 2015-09-18 2017-03-23 リチウム エナジー アンド パワー ゲゼルシャフト ミット ベシュレンクテル ハフッング ウント コンパニー コマンディトゲゼルシャフトＬｉｔｈｉｕｍ Ｅｎｅｒｇｙ ａｎｄ Ｐｏｗｅｒ ＧｍｂＨ ＆ Ｃｏ． ＫＧ 蓄電素子
KR102611656B1 (ko) * 2016-08-30 2023-12-08 삼성에스디아이 주식회사 이차 전지
JP6673858B2 (ja) * 2017-01-30 2020-03-25 株式会社Ｇｓユアサ 蓄電素子
DE102021104144A1 (de) 2021-02-22 2022-08-25 Audi Aktiengesellschaft Batteriepaket und Batterie für ein Kraftfahrzeug

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100591422B1 (ko) * 2004-07-30 2006-06-21 삼성에스디아이 주식회사 캔형 이차전지
KR100709871B1 (ko) * 2005-12-29 2007-04-20 삼성에스디아이 주식회사 이차전지
KR101002518B1 (ko) * 2008-06-23 2010-12-17 삼성에스디아이 주식회사 이차 전지
JP5525551B2 (ja) * 2010-02-05 2014-06-18 パナソニック株式会社 角形電池
JP5113959B2 (ja) 2011-02-22 2013-01-09 パナソニック株式会社 角形電池
US9455422B2 (en) * 2011-08-31 2016-09-27 Panasonic Intellectual Property Management Co., Ltd. Rectangular battery
KR101925584B1 (ko) * 2011-11-30 2018-12-06 삼성에스디아이 주식회사 이차 전지
KR101715963B1 (ko) * 2012-04-06 2017-03-27 삼성에스디아이 주식회사 이차 전지
US9401504B2 (en) 2012-06-08 2016-07-26 Samsung Sdi Co., Ltd. Battery cell

Also Published As

Publication number Publication date
CN104716277B (zh) 2019-10-11
KR102119049B1 (ko) 2020-06-04
JP2015118912A (ja) 2015-06-25
CN104716277A (zh) 2015-06-17
KR20150069898A (ko) 2015-06-24
JP6505998B2 (ja) 2019-04-24
US20150171407A1 (en) 2015-06-18
EP2884564A1 (fr) 2015-06-17
US9570731B2 (en) 2017-02-14

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